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- /************************************************************************
- * *
- * The SB-Prolog System *
- * Copyright SUNY at Stony Brook, 1986; University of Arizona, 1987 *
- * *
- ************************************************************************/
-
- /*-----------------------------------------------------------------
- SB-Prolog is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY. No author or distributor
- accepts responsibility to anyone for the consequences of using it
- or for whether it serves any particular purpose or works at all,
- unless he says so in writing. Refer to the SB-Prolog General Public
- License for full details.
-
- Everyone is granted permission to copy, modify and redistribute
- SB-Prolog, but only under the conditions described in the
- SB-Prolog General Public License. A copy of this license is
- supposed to have been given to you along with SB-Prolog so you
- can know your rights and responsibilities. It should be in a
- file named COPYING. Among other things, the copyright notice
- and this notice must be preserved on all copies.
- ------------------------------------------------------------------ */
- /* emode.P */
-
- emode(P,N,Mode) :-
- (symtype('_$emode'(_,_,_),K), K > 0, '_$mode'(P,N,Mode1)) ->
- (Mode = Mode1 ->
- (print('*** warning: multiple emode declarations for '),
- print(P), print('/'), print(N), $nl
- ) ;
- (print('*** Error: multiple distinct emode declarations for '),
- print(P), print('/'), print(N), $nl
- )
- ) ;
- ($length(Mode,N) ->
- ($mkemode(Mode,IMode,P,N),
- $asserti('_$emode'(P,N,IMode),1)
- ) ;
- (print('*** declared emode '), print(Mode), print(' for '), print(P),
- print('/'), print(N), print(' does not match predicate arity'), $nl
- )
- ).
-
- $mkemode([],[],_,_).
- $mkemode([M|MRest], [IM|IRest],P,N) :-
- ($mkemode1(M,IM) ->
- true ;
- ($writename('*** Unknown mode '),
- $write(M),
- $write(' in '), $write(P), $write('/'), $write(N),
- $write(' ***'),
- $nl,
- IM = 0
- )
- ),
- $mkemode(MRest,IRest,P,N).
-
- $mkemode1('c', 2).
- $mkemode1('nv', 1).
- $mkemode1('d', 0).
- $mkemode1('f', -1).
- $mkemode1('++', 2).
- $mkemode1('+', 1).
- $mkemode1('?', 0).
- $mkemode1('-', -1).
-
-